A screen device intended for a window or a door in a building or vehicle. The device includes a first elongated frame part having two ends; a further frame part and a third one, respectively, being arranged at each end of the first frame part at right angles to the first frame part and connected to a first one of its two ends. Two crossbars are arranged in parallel to the fixedly arranged first frame part and movable independently of each other along the two further frame parts. A pleated screen element is arranged between the first crossbar and the second crossbar, and the crossbars are guided by guide cords. At least one of the crossbars is formed by two profiles that are arranged in parallel to each other and leave a space between them in which a strip provided with holes for respective ones of the guide cords is received.
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1. A screen device for an opening in a window or a door in a building or vehicle, comprising:
a first elongated frame part having two ends;
a second frame part and a third frame part, respectively, that are oriented at right angles to the first frame part, being connected at each end of said first frame part to A first one of two ends of each of said second frame part and said third frame part;
a first crossbar and a second crossbar which are arranged in parallel to said first elongated frame part and movable independently of each other along said second frame part and said third frame part; and
a pleated screen element that is arranged between said first crossbar and said second crossbar, said crossbars being guided by guide cords,
wherein at least one of said crossbars is formed by two discrete profiles which are connected to each other at free ends thereof and leave between said two discrete profiles a space forming a continuous opening oriented in a plane defined by the second frame part and the third frame part and in which said space a strip provided with holes for respective ones of said guide cords is received,
wherein the continuous opening separates the two discrete profiles such that the two discrete profiles do not directly contact each other between their respective ends,
wherein the crossbars are arranged to move slidably in the second and third frame parts, and
wherein the second and the third frame parts are fixedly attached to the respective ends of the first frame part to extend at a ninety degree angle.
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The present application claims priority to European Patent Application No. 21 151 598.6, filed Jan. 14, 2021, the content of which is incorporated by reference herein.
The invention relates to a screen device for an opening, e.g. a window or a door in a building or vehicle, comprising a first elongated frame part having two ends; a second and a third frame part, respectively, that are oriented at right angles to said first frame part, being connected at each end of said first frame part to a first one of its two ends; a first crossbar and a second crossbar which are arranged in parallel to said first, fixedly arranged frame part and movable independently of each other along said two further frame parts; and a pleated screen element that is arranged between said first crossbar and said second crossbar, the crossbars being guided by guide cords.
Screen devices having a frame and a cord-guided, movable crossbar have been known in the art for some time, e.g. from the reference U.S. Pat. No. 4,473,101. In particular, they serve for visual, glare, or insect protection on openings such as e.g. windows in buildings but also in vehicles like campers. The described guide cords substantially have three functions, namely first to ensure the parallel guidance of the crossbar and to prevent its canting, second to provide a self-locking effect of the crossbar so that it is not displaced by its own weight or by shocks, and third to support a screen element arranged between an upper frame part and the crossbar so that it is not deformed or damaged by lateral forces, e.g. as a result of air draught or incorrect handling or operation, respectively.
From the reference US2005101456A1, a screen device having two movable crossbars is known between which a screen element is arranged. In particular, this device offers the advantage that both the upper and the lower end of the screen device are movable and thus a desired vertical area of an opening can be screened. Furthermore, the screen device according to US2005101456A1 offers the advantage that three fixed frame parts are sufficient, i.e. that a closed frame is not required, whereby it can be used in tight spaces, e.g. in a camper.
Particularly in the last-mentioned screen devices, at least part of the guide cords are deflected in at least one of the crossbars in two points and guided in parallel to the crossbar between these two points. At least part of these deflection points is formed by holes in the corresponding crossbar. If the crossbars are made in the form of C or hollow profiles, it is very difficult to achieve a clean deburring of the edges of these holes and to round them off, particularly on the inside of the profiles. Sharp edges not only hinder the movement of the crossbars but may also cause damages to the guide cords. Moreover, in the case of a C profile, the guide cords are visible between the flanges of the C profile and may interfere during manual handling of the crossbar.
On the background of this prior art, it is an object of the invention to simplify the manufacture of the screen device. Another object is to increase the operation reliability of the screen device and to prevent damages to the guide cords as far as possible.
According to the invention, these objects are achieved by a screen device wherein at least one of said crossbars is formed by two profiles that are arranged in parallel to each other and leave a space between them in which a strip provided with holes for respective ones of said guide cords is received.
Due to the fact that at least one of the crossbars is formed by two profiles that are arranged in parallel to each other, the guide cords running inside the crossbar are not visible from the outside. The bar can be provided with holes for a respective guide cord prior to the assembly of the screen device. At this point, the bar is still freely accessible from both sides so that deburring and rounding off the edges of the holes is easily possible.
An exemplary embodiment of the invention will be explained hereinafter with reference to the attached drawings showing:
The screen device illustrated in
A first crossbar 4 and a second crossbar 5 are arranged between the second and third frame parts 2, 3 in parallel to first frame part 1 and movable along the second and third frame parts 2, 3 independently of each other. Between first crossbar 4 and second crossbar 5, a pleated screen element 6 is arranged and connected to both crossbars 4, 5. Screen element 6 can be made of a textile material and may be partly or entirely opaque. By displacing crossbars 4, 5 together or against each other it is possible to adapt an area e.g. of a window to the requirements of sight or glare protection in its size and position. Between first frame part 1 and first crossbar 4, another screen element 7 is arranged and connected to first frame part 1 and first crossbar 4. This additional screen element 7 may e.g. have a mesh structure and serve as an insect protection screen. The arrangement of guide cords 28, 34, 48, and 54 visible in this figure will be explained in more detail below in connection with
In a schematic view, on one hand,
For more clarity, the detailed arrangement of the guide cords and their deflection points are shown separately in
In
A second guide cord 28 is represented by a broken line and also runs from tension spring 21 to the left to a deflection point 29 arranged in first frame part 1 and downwards through openings provided in the folded sections of screen element 7 to a deflection point 30 in end piece 14 of first crossbar 4. From there, second guide cord 28 is guided through first crossbar 4 and in parallel thereto to a deflection point 31 arranged in end piece 15 of first crossbar 4, and then runs downwards through openings provided in the folded sections of screen element 6 to a deflection point 32 in end piece 17 of crossbar 5. A deflection point 33 adjacent to deflection point 32, also in end piece 17, finally directs guide cord 28 to end portion 18 in frame part 3, where it is fastened.
A third guide cord 34 is illustrated by a dotted line and is deflected on the left side of tension spring 21 by a deflection point 35 to the right and guided through first frame part 1 in the opposite direction to a deflection point 36, from where it runs downwards through openings provided in the folded sections of screen element 7 through one of the holes 13 provided in strip 12 in first crossbar 4 without being deflected, and through openings provided in the folded sections of screen element 6 to a deflection point 37 arranged in crossbar 5. Deflection point 37 is formed by a hole 13 in strip 12 mentioned in connection with
As mentioned, the arrangement of the guide cords and deflection points shown in
List of Reference Numerals
1
first frame part
2
further frame part
3
further frame part
4
first crossbar
5
second crossbar
6
screen element
7
further screen element
8
corner piece
9
corner piece
10
profile
11
spacer
12
strip
13
hole
14
end piece
15
end piece
16
end piece
17
end piece
18
end portion
19
longitudinal grooves
20
space
21
tension spring
22
first guide cord
23
deflection point 22
24
deflection point 22
25
deflection point 22
26
deflection point 22
27
deflection point 22
28
second guide cord
29
deflection point 28
30
deflection point 28
31
deflection point 28
32
deflection point 28
33
deflection point 28
34
third guide cord
35
deflection point 34
36
deflection point 34
37
deflection point 34
38
deflection point 34
39
40
41
42
fourth guide cord
43
deflection point 42
44
deflection point 42
45
deflection point 42
46
deflection point 42
47
deflection point 42
48
fifth guide cord
49
deflection point 48
50
deflection point 48
51
deflection point 48
52
deflection point 48
53
deflection point 48
54
sixth guide cord
55
deflection point 54
56
deflection point 54
57
deflection point 54
58
deflection point 54
59
60
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